The Linux shell implementation asks for the maximum and minimum value of a multidimensional array _linux shell

My colleague sent a shell question to find the maximum and minimum values in a multidimensional array.
such as file 99file:

33 55 23 56 99
234 234 545 6546 34
11 43 534 33 75
43 34 76 756 33
343 890 77 667 55

One of my implementations:

#! /bin/bash
echo "The file is:"
cat 99shu
max=0
min=999999
line=1
dnum=$ (cat 99shu| WC-L) while
(($line <= $dnum)) does for
I in
$ (cat 99shu|head-"$line")
    do
  ((max< $i)) & &max= $i
    ((min> $i)) &&min= $i done by let
++line do
 
echo "The max number is: $ Max "
echo" the min number is: $min

Results:

The max number is:6546
The min number is:11

Implementation of the second:

#! /bin/bash
# echo the MAX and the MIN

echo "The numbers is:"
cat 99shu
mnum=0
min=99999
While the read line does
declare-a arr= ($line)
lnum=$ (echo $line | wc-w)
i=0 while
($i <$ Lnum))
do
(($mnum <${arr[i]})) && Mnum=${arr[i]}
(($min >${arr[i)})) && min=${ Arr[i]} Let
++i
do
< 99shu
echo "The max number is $mnum"
echo "the min number is $min"

Achieve 3, powerful awk

#! /bin/bash
echo "The MAX number is: $ (cat 99shu | awk ' {for (i=1;i<=nf;i++) if (max< $i) max= $i;p rint max} ' |tail-1 ' "
echo" eht MIN number is: $ (cat 99shu | awk ' {min=999999;for (i=1;i<=nf;i++) if (min> $i) min= $i;p rint min} ' |sort|head-1 '

Implementation 4:

#!/bin/bash
min=$ (cat  99shu | tr "T" "\ n" |tr "" \ n "|sort-n|uniq|grep-v" ^$ "|head-1)
max=$ (cat  99shu |  TR "\ \ n" \ |tr "" "\ n" |sort-n|uniq|grep-v "^$" |tail-1)
echo "The MAX number is $max"
echo "the MIN number is $min "